package com.qdxwx.common.utils;

import java.io.*;
import java.text.DecimalFormat;
import java.text.Format;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * Qdx NetSchool Platform
 * @author qdxwx
 * @updateTime 2022/5/25
 * @description
 */
public class ObjectUtils {

	private static final Format FORMAT = new DecimalFormat("#.##");

	public static boolean isNull(Object o) {
		return null == o;
	}

	public static boolean isNull(List<?> list) {
		return null == list || list.size() == 0;
	}

	public static boolean isNull(Set<?> set) {
		return null == set || set.size() == 0;
	}

	public static boolean isNull(Map<?, ?> map) {
		return null == map || map.size() == 0;
	}

	public static boolean isNull(Long lg) {
		return null == lg || lg == 0L;
	}

	public static boolean isNull(Integer it) {
		return null == it || it == 0;
	}

	public static boolean isNull(File file) {
		return null == file || !file.exists();
	}

	public static boolean isNull(Object[] strs) {
		return null == strs || strs.length == 0;
	}

	public static Number getNumber(Number number) {
		return isNull(number) ? Long.valueOf(0L) : number;
	}

	public static String numberFormat(Number number, String... pattern) {
		return isNull(pattern) ? FORMAT.format(number) : FORMAT.format(pattern[0]);
	}

	public static boolean isNotNull(Object o) {
		return !isNull(o);
	}

	public static boolean isNotNull(List<?> list) {
		return !isNull(list);
	}

	public static boolean isNotNull(Set<?> set) {
		return !isNull(set);
	}

	public static boolean isNotNull(Map<?, ?> map) {
		return !isNull(map);
	}

	public static boolean isNotNull(Long lg) {
		return !isNull(lg);
	}

	public static boolean isNotNull(Integer it) {
		return !isNull(it);
	}

	public static boolean isNotNull(File file) {
		return !isNull(file);
	}

	public static boolean isNotNull(Object[] strs) {
		return !isNull(strs);
	}
}